This section is from the "Elixirs And Flavoring Extracts. Their History, Formulae, & Methods of Preparation" book, by John Uri Lloyd. Also available from Amazon: Elixirs and flavoring extracts,: Their history, formulae, and methods of preparation;
Elixir of pepsin, 8 fluidounces.
Elixir of phosphate of quinine, 8 fluidounces.
Strychnine, 1 1/4 grains.
Acetic acid, a sufficient quantity.
Triturate the strychnine in a mortar with acetic acid in amount sufficient to effect its solution, then add the elixirs, having previously mixed them together.
Each fluidrachm (teaspoonful) of the finished elixir contains one grain of saccharated pepsin, one-half grain of quinine, and one-hundredth of a grain of strychnine.